[edk2-devel] [PATCH V2 03/10] OvmfPkg: Add TdxWorkArea definition

[Min Xu]

On January 27, 2022 9:26 PM, Gerd Hoffmann wrote:
> > +//
> > +// The TDX work area definition
> > +//
> > +typedef struct _SEC_TDX_WORK_AREA {
> > +  UINT32    PageTableReady;
> > +  UINT32    Gpaw;
> > +  UINT64    HobList;
> > +} SEC_TDX_WORK_AREA;
> > +
> > +typedef struct _TDX_WORK_AREA {
> > +  CONFIDENTIAL_COMPUTING_WORK_AREA_HEADER    Header;
> > +  SEC_TDX_WORK_AREA                          SecTdxWorkArea;
> > +} TDX_WORK_AREA;
> > +
> >  typedef union {
> >    CONFIDENTIAL_COMPUTING_WORK_AREA_HEADER    Header;
> >    SEV_WORK_AREA                              SevWorkArea;
> > +  TDX_WORK_AREA                              TdxWorkArea;
> >  } OVMF_WORK_AREA;
> 
> Now you have the CONFIDENTIAL_COMPUTING_WORK_AREA_HEADER
> twice ...
OVMF_WORK_AREA is an union. TDX_WORK_AREA is a struct. So there is one CONFIDENTIAL_COMPUTING_WORK_AREA_HEADER.

Thanks
Min



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